Removing duplicate string from same line - if it exists 1

[arunrr]

Hello,

I have the following file...

Dec 24, Meeting #32, Newark
Dec 26-Dec 30, Event #6, Birmingham
Dec 26-Dec 30, Event #7, Tampa
Dec 28, Meeting #33, Los Angeles
Dec 30-Jan 2, Event #8, Brussels
Jan 5-Jan 9, Event #9, Bangalore

The resulting out should be...

Dec 24, Meeting #32, Newark
Dec 26-30, Event #6, Birmingham
Dec 26-30, Event #7, Tampa
Dec 28, Meeting #33, Los Angeles
Dec 30-Jan 2, Event #8, Brussels
Jan 5-9, Event #9, Bangalore

In other words, if the date range is 'Dec xx-Dec yy", where the month for both the dates in the range is the same, then I do not need to show the month.

Thanks
AR

 

[feherke]

Hi

sed 's/\(\([[:alpha:]]\{3\}\) [[:digit:]]\{1,2\}-\)\2 /\1/' /input/file

Tested with GNU [tt]sed[/tt].

If you have no luck with your [tt]sed[/tt] implementation, try to use something else. The substitution should work in any tool/language capable to handle backreferences. Of course, after adjusting the regular expression's syntax.

Feherke.

http://free.rootshell.be/~feherke/

 

[arunrr]

Thanks Feherke, awesome! No surprise you were MVP!!
AR